This page describes the IBM SMS card "DHE", and is part of the SMS card database.

Function of the card:
SDTRL - Single Shot 0.15 Usec. to 65 Msec.
SDTRL single shot
SDTRL-sng shot 0.15 usec to 65 msec
Single shot

Open Collector Programmable Falling Edge Triggered One Shot w/ Pulldown

Saturated Drift Transistor Resistor Logic (SDTRL) is a form of resistor-transistor logic using faster drift-field transistors.

Part number:370262

Field replacement part number:370262

Customer Eng reference number:729924

PCB number:484089

Used in:IBM 1311 Disk,IBM 1401,IBM 1414 I/O Synchronizer,IBM 1443 Printer,IBM 1410

Symbol:SS

SS: Single Shot. Provides a monostable output which can be pulsed into its quasi-stable state for a predetermined duration. with each input triggering pulse or triggering voltage change. Once triggered, the output pulse duration becomes independent of input time duration or amplitude.

Transistor type:033 101

References:
2_2 SMS Cards, p99,100.
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p1075.
1414 SMS Cards, p58.
IBM 1311 ILD, p126.
IBM 1443 ALD, p102.

Pinout:

A TC-0
B I1
C O1R
D TC-0.3US
E TC-3US
F TC-30US
G TC-C
H TC-0.3MS
J GND
K I1
L I1
M -12V
N +12VM
P O1C
Q TC-3MS
R TC-30MS

This page created by Ken Shirriff, 2015.

The information on these pages comes from a variety of sources, especially old IBM documents on bitsavers.org, as well as information from the IBM 1401 restoration team, especially Tim Coslet's SMS data and Jim Hunt's data. Images courtesy of Randall Neff. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.

Creation time: Tue Mar 03 23:40:33 2015.